
<toolbarseparator hidden="true" id="zen-customization-uidensity-separator"/>
<html:input hidden="true" type="range" id="customization-zen-browser-space" min="0" max="16" step="4"></html:input>
<label hidden="true" data-l10n-id="customization-zen-browser-space" for="customization-zen-browser-space"/>
